From a user account that is assigned to the CsUserAdministrator role or the CsAdministrator role, log on to any computer in your internal deployment.

Open a browser window, and then enter the Admin URL to open the Lync Server Control Panel. For details about the different methods you can use to start Lync Server Control Panel, see Open Lync Server 2013 administrative tools.

In the left navigation bar, click Users.

In the Search users box, type all or the first portion of the display name, first name, last name, Security Accounts Manager (SAM) account name, SIP address, or line Uniform Resource Identifier (URI) of the user account that you want to disable or re-enable, and then click Find.

In the table, click the user account that you want to remove.

On the Action menu, select Remove from Lync Server, and a dialog box appears.

You can remove user accounts by using the Disable-CsUser cmdlet. This cmdlet can be run either from the Lync Server 2013 Management Shell or from a remote session Windows PowerShell. For details about using remote Windows PowerShell to connect to Lync Server, see the Lync Server Windows PowerShell blog article "Quick Start: Managing Microsoft Lync Server 2010 Using Remote PowerShell" at http://go.microsoft.com/fwlink/p/?linkId=255876.